Lie.
PlayStore(Android)

Appstore (iOS)
I really don't get this argument anymore. Its 2019. You need to actively search servers to rent that still have a data cap.
And also RAM usage is kind of a joke. I mean server have more than enough and clients as well. Especially when you target gamers with your "gamer voice com software". I mean the latest games require 8GB of ram... and recommend 16GB for max settings.
So I don't really understand the argument of using 100 to 200mb less RAM than Discord as being "superior".
It is still in the low 3 digits.
I mean even Google drive sync uses 300mb already.
At least with discord I have regular feature updates and communication from the devs. I gladly give them a few hundred MB more of ram for that.